ISO 10502-2012 PDF

Full title and description

ISO 10502:2012 — Aerospace — Hose assemblies in polytetrafluoroethylene (PTFE) for use up to 232 °C and 10 500 kPa — Technical specifications and requirements. This International Standard specifies the technical requirements, classification and intended applications for PTFE-lined hose assemblies used in aircraft hydraulic, fuel and lubricating oil systems, and for selected aerospace pneumatic uses where gaseous diffusion through the PTFE liner is acceptable.

Abstract

ISO 10502:2012 sets requirements for PTFE hose assemblies intended for aerospace fluid systems, covering two classes of assemblies with defined temperature and nominal pressure limits (Class I: −55 °C to 232 °C; Class II: −55 °C to 135 °C) and nominal pressure ratings up to 10 500 kPa (105 bar). The standard specifies materials and fitting combinations (corrosion‑resistant steel, titanium or aluminium as applicable), dimensional limits (Class II applicability from DN12 and larger) and the intended system uses (hydraulic, fuel, lubricating oil and certain pneumatic uses with allowable gaseous diffusion).

General information

• Status: Published (International Standard, confirmed).
• Publication date: February 2012 (2012-02).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 49.080 (Aircraft and space vehicle engineering); 83.140.40 (Hoses).
• Edition / version: Edition 2 (2012).
• Number of pages: 19 pages.

These bibliographic and lifecycle details are recorded on the ISO catalogue entry for ISO 10502:2012.

Scope

ISO 10502:2012 applies to PTFE‑lined hose assemblies intended for aircraft hydraulic, fuel and lubricating oil systems and for some aerospace pneumatic applications where limited gaseous diffusion through the PTFE liner is tolerated. It covers two classes of assemblies: Class I assemblies with fittings of corrosion‑resistant steel or titanium suitable up to 232 °C (450 °F), and Class II assemblies with fittings of corrosion‑resistant steel and aluminium suitable up to 135 °C (275 °F). Nominal pressure capability is specified up to 10 500 kPa (105 bar). The standard replaces the earlier 1992 procurement specification and establishes technical requirements, materials/fitment combinations and dimensional applicability (Class II: DN12 and larger).

Key topics and requirements

• Classification of PTFE hose assemblies into Class I and Class II with associated temperature and fitting material limits.
• Nominal pressure rating up to 10 500 kPa (105 bar) and corresponding design/assembly verification requirements.
• Material and fitting specifications (PTFE liner, corrosion‑resistant steel, titanium, aluminium as applicable) and compatibility notes for hydraulic, fuel and lubricating oil systems.
• Dimensional and nominal size guidance (Class II applicability from DN12 upwards) and marking/identification expectations for traceability.
• Intended application limits for pneumatic systems where gaseous diffusion through PTFE is acceptable; guidance for selection by service environment and fluid type.
• Reference to test/inspection and procurement requirements to ensure assembly conformity with aerospace operational conditions.

These are the principal technical themes and requirements addressed by the standard.

Typical use and users

ISO 10502:2012 is used by aerospace OEMs, hose and fitting manufacturers, design and qualification engineers, maintenance/repair organizations (MROs), procurement/specification teams and certification bodies. It guides selection, manufacture, testing and procurement of PTFE‑lined hose assemblies for aircraft hydraulic, fuel and lubricating oil systems and for some pneumatic applications where the PTFE liner’s gas diffusion characteristics are acceptable.

Related standards

ISO 10502:2012 supersedes ISO 10502:1992. Other related ISO documents and committee outputs cover test methods and complementary requirements for aerospace fluid systems, including standards such as ISO 10583 (test methods for tube/fitting assemblies), ISO 11639 (part numbering for hose assemblies) and related hose‑classification or procurement documents (for example, later-referenced PTFE hose procurement/classification standards appearing in ISO/TC 20/SC 10 listings). Users commonly consult these related standards when specifying, testing or procuring assemblies.

Keywords

PTFE hose assemblies, aerospace, hydraulic hose, fuel system hose, lubricating oil hose, pressure rating 105 bar, temperature rating 232 °C, Class I, Class II, DN12, fittings, corrosion‑resistant steel, titanium, aluminium, ISO 10502.

FAQ

Q: What is this standard?

A: ISO 10502:2012 is an ISO International Standard that specifies technical specifications and requirements for polytetrafluoroethylene (PTFE) lined hose assemblies intended for certain aerospace fluid system applications.

Q: What does it cover?

A: It covers classification, intended uses (hydraulic, fuel, lubricating oil and selected pneumatic), temperature and nominal pressure limits, fitting and material combinations for Class I and Class II hose assemblies, sizing applicability and procurement/identification expectations.

Q: Who typically uses it?

A: Aerospace OEMs, hose and fitting manufacturers, systems and qualification engineers, maintenance/repair organizations, procurement teams and conformity/certification bodies use this standard when designing, specifying, testing or buying PTFE hose assemblies for aircraft systems.

Q: Is it current or superseded?

A: ISO 10502:2012 is the current edition published in February 2012 and recorded as confirmed in ISO’s review cycle (confirmed in the 2023 review). It replaced the earlier 1992 edition.

Q: Is it part of a series?

A: It is part of the body of ISO standards and ISO/TC 20/SC 10 work on aerospace fluid systems and components; related standards cover test methods, part numbering and complementary procurement/specification matters (for example ISO 10583 and ISO 11639). Users often apply several of these documents together when specifying and qualifying hose assemblies.

Q: What are the key keywords?

A: PTFE, hose assembly, aerospace, hydraulic, fuel, lubricating oil, pressure 10 500 kPa, temperature 232 °C, Class I, Class II, DN12, fittings, corrosion‑resistant steel, titanium, aluminium.